org.spongycastle.asn1.cms

Class AuthenticatedData

java.lang.Object

org.spongycastle.asn1.ASN1Object

org.spongycastle.asn1.cms.AuthenticatedData

All Implemented Interfaces:

ASN1Encodable, Encodable

public class AuthenticatedData
extends ASN1Object

RFC 5652 section 9.1: The AuthenticatedData carries AuthAttributes and other data which define what really is being signed.

 AuthenticatedData ::= SEQUENCE {
       version CMSVersion,
       originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL,
       recipientInfos RecipientInfos,
       macAlgorithm MessageAuthenticationCodeAlgorithm,
       digestAlgorithm [1] DigestAlgorithmIdentifier OPTIONAL,
       encapContentInfo EncapsulatedContentInfo,
       authAttrs [2] IMPLICIT AuthAttributes OPTIONAL,
       mac MessageAuthenticationCode,
       unauthAttrs [3] IMPLICIT UnauthAttributes OPTIONAL }

 AuthAttributes ::= SET SIZE (1..MAX) OF Attribute

 UnauthAttributes ::= SET SIZE (1..MAX) OF Attribute

 MessageAuthenticationCode ::= OCTET STRING
 

Constructor Summary

Constructors

Constructor and Description
AuthenticatedData(OriginatorInfo originatorInfo, ASN1Set recipientInfos, AlgorithmIdentifier macAlgorithm, AlgorithmIdentifier digestAlgorithm, ContentInfo encapsulatedContent, ASN1Set authAttrs, ASN1OctetString mac, ASN1Set unauthAttrs)

Method Summary

Modifier and Type	Method and Description
static int	calculateVersion(OriginatorInfo origInfo)
ASN1Set	getAuthAttrs()
AlgorithmIdentifier	getDigestAlgorithm()
ContentInfo	getEncapsulatedContentInfo()
static AuthenticatedData	getInstance(ASN1TaggedObject obj, boolean explicit) Return an AuthenticatedData object from a tagged object.
static AuthenticatedData	getInstance(java.lang.Object obj) Return an AuthenticatedData object from the given object.
ASN1OctetString	getMac()
AlgorithmIdentifier	getMacAlgorithm()
OriginatorInfo	getOriginatorInfo()
ASN1Set	getRecipientInfos()
ASN1Set	getUnauthAttrs()
ASN1Integer	getVersion()
ASN1Primitive	toASN1Primitive() Produce an object suitable for an ASN1OutputStream.

Methods inherited from class org.spongycastle.asn1.ASN1Object

equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode, toASN1Object

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AuthenticatedData

public AuthenticatedData(OriginatorInfo originatorInfo,
                         ASN1Set recipientInfos,
                         AlgorithmIdentifier macAlgorithm,
                         AlgorithmIdentifier digestAlgorithm,
                         ContentInfo encapsulatedContent,
                         ASN1Set authAttrs,
                         ASN1OctetString mac,
                         ASN1Set unauthAttrs)

Method Detail

getInstance

public static AuthenticatedData getInstance(ASN1TaggedObject obj,
                                            boolean explicit)

Return an AuthenticatedData object from a tagged object.

Parameters:

obj - the tagged object holding the object we want.

explicit - true if the object is meant to be explicitly tagged false otherwise.

Returns:

a reference that can be assigned to AuthenticatedData (may be null)

Throws:

java.lang.IllegalArgumentException - if the object held by the tagged object cannot be converted.

getInstance

public static AuthenticatedData getInstance(java.lang.Object obj)

Return an AuthenticatedData object from the given object.

Accepted inputs:

• null → null
• AuthenticatedData object
• ASN1Sequence input formats with AuthenticatedData structure inside

Parameters:

obj - the object we want converted.

Returns:

a reference that can be assigned to AuthenticatedData (may be null)

Throws:

java.lang.IllegalArgumentException - if the object cannot be converted.

getVersion

public ASN1Integer getVersion()

getOriginatorInfo

public OriginatorInfo getOriginatorInfo()

getRecipientInfos

public ASN1Set getRecipientInfos()

getMacAlgorithm

public AlgorithmIdentifier getMacAlgorithm()

getDigestAlgorithm

public AlgorithmIdentifier getDigestAlgorithm()

getEncapsulatedContentInfo

public ContentInfo getEncapsulatedContentInfo()

getAuthAttrs

public ASN1Set getAuthAttrs()

getMac

public ASN1OctetString getMac()

getUnauthAttrs

public ASN1Set getUnauthAttrs()

toASN1Primitive

public ASN1Primitive toASN1Primitive()

Produce an object suitable for an ASN1OutputStream.

Specified by:

toASN1Primitive in interface ASN1Encodable

Specified by:

toASN1Primitive in class ASN1Object

Returns:

a primitive representation of this object.

calculateVersion

public static int calculateVersion(OriginatorInfo origInfo)